Polishing-wheel



R. w. PUTNAM POLISHING WHEEL.

APPLICATION FILED NOV-26, I919.

1,348,050. I Patented July 27, 1920.

WIT/V5885 INVENTOR 4? hf Fax/12am. er

" (ATTORNEYS UNITED STATES RALPH W. PUTNAM, 0F WATERBURY, VERMONT.

POLISHING-WHEEL. "a 5 Specification of Letters Patent.

Patented July 27, 1920.

Application filed November 26, 1919. Serial No. 340,767.

To all whom it may concern 1 Be it known that I, RALPH IV. PUTNAM, acitizen of the United States, and a resident of \Vaterbury, in thecounty of \Vashington and State of Vermont, have invented a new andImproved Polishingheel, of which the following is a full, clear, andexact description.

This invention relates to improvements in polishing wheels which arecommonly known in the trade as ironing wheels, an object of theinvention being to provide an improved arrangement of scroll on theunder surface of the wheel which prevents the accumulation of abrasiveor other material used for grinding or polishing the surface of stone atany one point on the wheel, but always tends to move such abrasivematerial toward the center of the wheel.

A further object is to provide a wheel of the character stated, whichmay be fed either from the center or from the outside and on which thescroll is formed of curved flanges in circular series, the flanges beingof quarter length and arranged in general spiral form with taperingforward ends.

lVith these and other objects in view the invention consists in certainnovel features of construction, and combinations and arrangements ofparts, as will be more fully hereinafter described and pointed out inthe claims.

In the accompanying drawings-- Figure 1 is a bottom plan view of myimproved polishing wheel;

Fig. 2 is an edge view thereof;

Fig. 3 is a top plan view illustrating a modification; and

Fig. 4 is an edge view of Fig. 3.

My improved polishing wheel comprises a plate or disk 1 having on itsunder faces a scroll made up mainly of curved flanges 2 which arearranged in general spiral form, which extend a quarter way around thesurface of the disk and which have tapering flanged ends 3.

The ends of one radial series of flanges 2 terminate at points betweenthe radial series of flanges adjacent thereto. The outer flanges 3 arepreferably longer than the inner flanges 2 and at one end extend to theouter edge of the disk 1 so as to provide a take-up or inlet to startthe abrasive material toward the center of the wheel.

My invention is, of course not limited to the particular material usedeither in the construction of the flanges or of the disk and I may useany suitable metal for the flanges, and either metal, Wood or any othermaterial for the disk without departing from my invention.

In Figs. 3 and 4 I illustrate a modification in which the abrasivematerial or other material is fed to the center of the wheel and in thisform of my invention I provide 6 a hopper 4 which communicates with arelatively large opening 5 in the center of the disk and is providedwith a crossbar 6. In

this form of my invention the driving lugs 7 are formed as a part of thebar 6, while in 7 the preferred form the driving lugs 7 are fixeddirectly to the disk 1 and an opening 8 ids pireferably provided in thecenter of the My invention therefore resides broadly in the provision ofa scroll in which the elements thereof are formed of curved flangesextending approximately a quarter way around the surface of the disk.

Various slight changes may be made in the general form and arrangementof parts described without departing from the invention, and hence I donot limit myself to the precise details set forth but consider myself atliberty to make such changes and al- 8 terations as fairly fall withinthe spirit and scope of the appended claims.

I claim:

1. A device of the character stated, com prising a disk or plate, ascroll on the under face of the disk or plate, said scroll of gen eralspiral form and composed of a plurality of series of curved flangesextending approximately one-quarter distance around the disk or platewith the forward ends of 9 the flanges of one radial series locatedbetween the flanges of adjacent radial series.

2. A device of the character stated, comprising a disk or'plate, ascroll on the under face of the disk or plate, said scroll of generalspiral form and composed of a plurality of series of curved flangesextending approximately one-quarter distance around the disk or platewith the forward ends of the flanges of one radial series locatedbetween 1 the flanges of adjacent radial series, said flanges havingtapering forward ends, and curved flanges constituting the outerportions of the scroll, said last-mentioned flanges having taperingforward ends ex- 1 ten i g to.- the ed e of the late or disk.

' ALPH PUTN'AM\

